Nene,

VERY nice project you have ahead of you.
That Nav system is going to look killer, it is a crying shame that we as buyers of Audi's top model have to go thru this to get what they get over the pond. If this isnt brand loyalty and an enthusiast (nene) I dont know what is. Kudo's to you my friend, its not gonna be an easy job but you will "git er done".
Good luck and I am looking forward to hearing your inputs before I start looking into it for my beast.

Bajo

PS. your link to navplus goes to a picture of some volks wheels, FYI.